My “Open with…” menu is buggy! I end up with many duplicates of the same programs showing up in this list. So, I set out to find a fix to this today.
Other sources on the Internet give a directory to move to, then a terminal command to run. Unfortunately, it looks like at some point, Apple has moved this to another directory, but none of the sources I could find pointed me to the right location (I’m running 10.8.2).Fortunately, a simple Spotlight search turned up what I was looking for.To save you the trouble, open a Terminal session and type:
$ cd /System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/LaunchServices.framework/Versions/A/Support
$ ./lsregister -kill -domain local -domain system -domain user
Anyhow, since I ran the lsregister command, all is back to normal again.